| /* |
| (c) Copyright 2001 convergence integrated media GmbH. |
| All rights reserved. |
| |
| Written by Denis Oliver Kropp <dok@convergence.de> and |
| Andreas Hundt <andi@convergence.de>. |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the |
| Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <math.h> |
| |
| #include <GL/gl.h> |
| #include <GL/glu.h> |
| |
| #include <directfb.h> |
| #include <directfbgl.h> |
| |
| |
| typedef struct { |
| IDirectFBWindow *window; |
| IDirectFBSurface *surface; |
| IDirectFBGL *gl; |
| |
| int width; |
| int height; |
| |
| unsigned long last_time; |
| int frames; |
| float fps; |
| } Context; |
| |
| static const GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0}; |
| |
| static IDirectFB *dfb; |
| static IDirectFBDisplayLayer *layer; |
| static IDirectFBFont *font; |
| static IDirectFBEventBuffer *events = NULL; |
| |
| /* macro for a safe call to DirectFB functions */ |
| #define DFBCHECK(x...) \ |
| do { \ |
| ret = x; \ |
| if (ret != DFB_OK) { \ |
| fprintf( stderr, "%s <%d>:\n\t", __FILE__, __LINE__ ); \ |
| DirectFBErrorFatal( #x, ret ); \ |
| } \ |
| } while (0) |
| |
| |
| static inline unsigned long get_millis() |
| { |
| struct timeval tv; |
| |
| gettimeofday (&tv, NULL); |
| return (tv.tv_sec * 1000 + tv.tv_usec / 1000); |
| } |
| |
| |
| static void |
| setup( Context *context ) |
| { |
| GLfloat pos[4] = {5.0, 5.0, 10.0, 0.0}; |
| |
| context->surface->GetSize( context->surface, |
| &context->width, &context->height ); |
| |
| context->gl->Lock( context->gl ); |
| |
| glLightfv(GL_LIGHT0, GL_POSITION, pos); |
| glEnable(GL_CULL_FACE); |
| glEnable(GL_LIGHTING); |
| glEnable(GL_LIGHT0); |
| glEnable(GL_DEPTH_TEST); |
| |
| glViewport(0, 0, context->width, context->height); |
| |
| glMatrixMode(GL_PROJECTION); |
| glLoadIdentity(); |
| gluPerspective(70.0, context->width / (float) context->height, 1.0, 80.0); |
| |
| glMatrixMode(GL_MODELVIEW); |
| glLoadIdentity(); |
| glTranslatef(0.0, 0.0, -40.0); |
| |
| context->gl->Unlock( context->gl ); |
| } |
| |
| static void |
| update( Context *context ) |
| { |
| unsigned long t; |
| IDirectFBSurface *surface = context->surface; |
| static __u8 r = 0, g = 0, b = 0; |
| |
| |
| context->gl->Lock( context->gl ); |
| |
| glClearColor( r++/255.0, g++/255.0, b++/255.0, 1.0 ); |
| glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
| |
| context->gl->Unlock( context->gl ); |
| |
| if (context->fps) { |
| char buf[16]; |
| |
| snprintf(buf, sizeof(buf), "%.1f FPS\n", context->fps); |
| |
| surface->SetColor( surface, 0xff, 0x00, 0x00, 0xff ); |
| surface->DrawString( surface, buf, -1, |
| context->width - 5, 5, DSTF_TOPRIGHT ); |
| } |
| |
| surface->Flip( surface, NULL, 0 ); |
| |
| context->frames++; |
| |
| t = get_millis(); |
| if (t - context->last_time >= 2000) { |
| float seconds = (t - context->last_time) / 1000.0f; |
| |
| context->fps = context->frames / seconds; |
| |
| context->last_time = t; |
| context->frames = 0; |
| } |
| } |
| |
| int |
| main( int argc, char *argv[] ) |
| { |
| DFBResult ret; |
| int i; |
| int quit = 0; |
| const int num = 2; |
| Context contexts[num]; |
| |
| DFBCHECK(DirectFBInit( &argc, &argv )); |
| |
| /* create the super interface */ |
| DFBCHECK(DirectFBCreate( &dfb )); |
| |
| DFBCHECK(dfb->GetDisplayLayer( dfb, DLID_PRIMARY, &layer )); |
| |
| /* create the default font */ |
| DFBCHECK(dfb->CreateFont( dfb, NULL, NULL, &font )); |
| |
| for (i=0; i<num; i++) { |
| IDirectFBWindow *window; |
| IDirectFBSurface *surface; |
| IDirectFBGL *gl; |
| DFBWindowDescription desc; |
| |
| desc.flags = DWDESC_POSX | DWDESC_POSY | |
| DWDESC_WIDTH | DWDESC_HEIGHT; |
| desc.posx = (i%3) * 200 + 10; |
| desc.posy = (i/3) * 200 + 10; |
| desc.width = 180; |
| desc.height = 180; |
| |
| DFBCHECK(layer->CreateWindow( layer, &desc, &window )); |
| DFBCHECK(window->GetSurface( window, &surface )); |
| DFBCHECK(surface->GetGL( surface, &gl )); |
| |
| contexts[i].window = window; |
| contexts[i].surface = surface; |
| contexts[i].gl = gl; |
| |
| contexts[i].last_time = get_millis(); |
| contexts[i].frames = 0; |
| contexts[i].fps = 0; |
| |
| setup( &contexts[i] ); |
| |
| if (events) |
| DFBCHECK(window->AttachEventBuffer( window, events )); |
| else |
| DFBCHECK(window->CreateEventBuffer( window, &events )); |
| |
| DFBCHECK(surface->SetFont( surface, font )); |
| |
| window->SetOpacity( window, 0xff ); |
| } |
| |
| while (!quit) { |
| DFBWindowEvent evt; |
| |
| for (i=0; i<num; i++) |
| update( &contexts[i] ); |
| |
| while (events->GetEvent( events, DFB_EVENT(&evt) ) == DFB_OK) { |
| switch (evt.type) { |
| case DWET_KEYDOWN: |
| switch (evt.key_symbol) { |
| case DIKS_ESCAPE: |
| quit = 1; |
| break; |
| |
| default: |
| break; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| } |
| |
| events->Release( events ); |
| |
| for (i=0; i<num; i++) { |
| contexts[i].gl->Release( contexts[i].gl ); |
| contexts[i].surface->Release( contexts[i].surface ); |
| contexts[i].window->Release( contexts[i].window ); |
| } |
| |
| font->Release( font ); |
| layer->Release( layer ); |
| dfb->Release( dfb ); |
| |
| return 0; |
| } |
| |